Sheet stacker



Feb. 12, 1935.

Filed Nov. 25, 192B Paal.

A. OLSON ET AL SHEET STACKER 4 Sheets-Sheet l WALTER fio/.Mi

. BY www Feb. 12, 193,5. A. OLSON ET AL SHEET STACKER Filed NOV. 25, 1923 4 Sheets-Sheet 2 Feb.12,1935. f AOLSON' HAL 1,991,028

SHEET STACKER' Filed Nov. 25, 1928 4 Sheets-Sheet 3 lNvENToRs ,fum/vzw CL50/v WaLrR HOI-M5 ATTOR N EYS F155.. QSS. Af OLSQN ET ALl 1,991,028

' SHEET STACKER Filed Nov. .25, 1925 4 Sheets-Shes# 4 IIII NTORS 4 Y fpm sHEiirsTAcKEn "Andrew Olson and:Walter Helms", Cleveland, Ohio, f t assignors vto TheClevelttnd `Folding Machine Conipany, Cleveland, Ohio, a corporation oft 'invention relates' to improvements in sheet Sta'ckers, 'and is yr'itended primrilyfor use inthestecking of folded sheets, of siall vsize as tneygar delivered fromthe folding machine.

5 The invention 'ands special utility 1n cannet'tin with 'fided sheets or a size comparable tof that of 'an oi'li'r`1ar'57 ctlliri'g` card, such `sheets heing 4in common fdr enclosure in 'small packages on certons ofmrchndiseofyvarious kinds. The steckiigof folded sheets of `s 1`ichs'riall size t offered` considrable `diffu:ulti] l'1e 'r 'e`tofore',` ordifV 'nar' tlckers beingl 'offlittle us `for the-purpose. n f the' objects of the presentintfention ernia y' on' the line 3 3, Fig. 2.

tts-ttt" isgth.'pttttsttn'sf maths of 1 p possof theA present application, wehaye 'diinnt Qf `the :invention in operative 1 tt hftzbhtarfstttat View taken:

*sielrsus i242 risttiitirigfalongfmit bottomedltroligh. 1 Infthis troughv a. block 2 5,' pre j v erably of Wood, is adapted to s1`id'e, be` ing gided by the musst.

Brackets 26 and 27A are attached to'fthe f ront and rear ends respectively of the cross member 21. These brackets are connected at their for'- ward ends by"asqurd`bar"28f1ipon which are atdjustdbly secured apairgof clampsll29" which support horizontal guide ngerso, under which the folded sheets riinfi'n theop'eretion of; the stecken, The rear ends of theselguides re de ectedpwardly' as' shivvn in order to .gur"d against the pssibilityi 91111611@`r catmng nitq paperV extending :tboifeV the n'ofrml fl'eife'l,` off the steek, due tb inacciirltely lflded'sheets T or" other CaUSS- f n y n; tnebrtttkets zssndjgzi wexprovide pear;

ings tn wmchgare tptatttbiyj supprted shafts anu-32 .carrying 'rubber discs. ss and 34 respete;

rolls to whichthe folded sheets" are `deliv erfd bythe rolls" 15' and 16A of theffolding m'chne.

'Beiow the shaft 1,31; and a little 1:01 the ra;

thereof the'bracketsfand 2'7` hve'bearings tions ,ofthefroilers 3a.

f Itis desirable@ take pbwerfdr thevopeatio of thel stacker frorh the folding machine with which'itisjused, andtothis 'endwe may utilize aigear 40' carriedfupon' a shaft ljofthe folding machine, this shaft beingr driven,` from seine convenient moving'part of the folding mchine.

On the forward end of shaft 35 We mount al pinion v42 f which meshes with the gear-1 40. On the ifea!" end of this shaft "351s, anotherpinion 43 which meshes with en idler `4 4 onf al" stub shaft 45 mounted in the 4lord cket 27. l The idler M inurn' meshes with a pinion 4 6 on the rearV endet thshaft 31, and the shafts Brand 32 ere' interconnected `byinterrheshingpinion's 47 and 48`on' theforward ends 'ofthewheel to accommodatethe greater porthat vthe wnelfsi rotstes chemise, tts viswd in that figure andthat thefsde of'n facing the tab1e123-therefore moves downwardly.

in their downward travel into position in frontl of the'wheel 37 and behind the last delivered' sheet of thel stack. Immediately thereafter one of the rollers 38 comes into contact with the sheet and, by virtueof its movement in a downward and forward direction, imparts to the sheet a push in a downward and lforward direction which causes the sheet to travel downwardly until it rests upon the table 23, and Yto move forwardly a short distance carrying with it in the'latteri movement all of the sheets in the stack, and 'imparting to the wooden block 25 a corresponding forward movement.

Owing to the fact that we provide a plurality of rollers 38 in the wheel 37, and owing to the fact that the latter rotates at approximately the same speed as the shafts 31 and 32, it is impossible for the feed rolls `of the latter shaft-s to deliver sheets so fast that 'any of them fail to receive at least one push from the rollers 38. In fact each sheet receives two or more such pushes. Furthermore, the rollers 38, owing to the comparatively large diameter of the wheel' 37, have a greater' surface speed thanthev speedof ,delivery of the sheets by the rubber discs 33 and 34. Consequently, even though a roller 38 may l be directly below a sheet deliveredzby discs 33 and `34, there will be no'impact of the sheet upon fl 4Q that roller, and on the contrary,-the roller will move away from the sheet.

" As the stackof sheets moves forward vthe guide fingersl 30 hold the sheets down and serve vto even up any small inequalities which may occur in the stack. The folded sheets A are illustrated in Figs. `1,2 and 4' of the drawings in stacked position. In practice, the trough-shaped table is permitted to become lled for some distance beforea portion of the sheets is removed. WhenV this is done'the block 25 is at oncel slid rearwardly to engage with the foremost remainv ing sheet, and thus to `maintainall of the renot to be construed as constituting a limitation upon the scope of the invention. i

yI-Iaving thus described lour inventionl we claim: t 1. In a stacker for paperhandling machines, a table, means for delivering folded sheets downwardly onto'said table in upright position, one behind another, whereby va stack is formed,l and means for pushingV said sheets forwardly step by step comprising a pusher wheel situated behind the point of delivery of said sheets, said wheel having a plurality of projections thereon adapted to engage the sheet last delivered, and means for rotating downwardly the side of said wheel which faces the sheets ata surface speed greater thanthe lspeed of delivery of said sheets. Y 2. In a stacker for paper handling machines,

a table, means for delivering folded vsheets down i wardly onto said table inl upright position one t adapted to engage'the sheet last'delivered, and

means for rotating downwardly Ythe side of said ywheel which faces the sheets at a surface speed greater than the speed of delivery of said sheets. 3. A stacker unit movable to a position adjacent a paper handling machine and comprising a receptaclev provided above the same with rollers for'feeding sheets downwardly therein from the machine, means below the rollers for seating the sheets on edgev in thefreceptacle and packing them in standing position therein one behind another, and mechanism for imparting motion to said rollers and said means and operated by a part of the machine when said unit is moved to said position.

4. A stackerunit movable to aV position adja-g cent a paper )handling machine and comprising a receptacle for receiving `sheets from the machine, a pair' of rollers journalled on' thev unit above the receptacle thereof and adapted to feed,

' cent a paper handling machine and comprising 'a receptaclefor receiving sheets fromthe `machine, a pair of rollers journalled on the unit above the receptacle thereofY and adapted to feed sheets downwardly into'saidreceptacle from vsaid machine, an annular-memberv provided circumferentially thereof with spaced sheet engaging elements projecting therefrom, Asaid member being journalled on ythe unit belowI `saidrollers and said 'elements being adapted to seat the sheets on edge in the receptacle and pack them in standing position therein one behind'another; and Vmeans for driving the annular member and said rollers and driven by a part ofthe machine when the unit is moved tojsaid'position.

6. A stacker unit movable to a position adjacent a paper handlingsmachine andj comprisingV a receptacle for receiving lsh'eetsfromv the ,machina a pair of rollersY journalled L on the 'unit above the receptacle thereof and. adapted to feed the sheets downwardly into said receptacle from said machine,y a. rotatable device mounted on the unit below the rollers'thereof and adapted to seatthe" sheets on "edge in the receptacle and pack them in standingjposition therein one behind another, means Aon the unit for guiding the sheets from the rollers to the rotatable device, and meansv for Adriving said rollers and said device and drivenfrom the ma'- chine when said unitis moved'to said position.

7. A stacker unit movable to a position fadjacent a paper handling machine and comprising a movable support, a vhorizontal receptacle thereon for receiving sheets from themachine, rollers andA a rotatable device arranged'in super,- Aposedl relation adjacent anv open end of the receptacle and journalled onsaid support, said rollersbeing. adapted to feedsheets downwardly toward said end of the receptacle from said machine and said rotatable device being adapted to push and seat the sheets on edge in said receptacle and pack and advance them therein one behind another,V and gearing for driving the rollers and the rotatable device and driven from a partof the machine whenv said unit is moved to said position.

8. A stacker unit movable to a position adjacent a paper handling machine and comprising a receptacle for receiving sheetsfrom the inachine, rollers journalled on `the unit above one end of the receptacle thereof and adapted `to feed the sheets downwardly therein from said machine, means between which the sheets are packed standing on edge one behind another in the receptacle and comprisingY a member movable along said receptacle as sheetsv are fed and packed therein and a device for packing the sheets in said receptacle rearwardly of said member and mounted on said unit -below the rollers thereof, and mechanism for imparting motion to said rollers and said device and `operated by a `part of the machine when the unit is moved to said position.y

9. In a movable stacker unit for paper han` dling machines, a pair of rollers for receiving sheets from a part of the machine when thev the rollers and into whichthe sheets are di-` rected `downwardly by thezlatter, means *ar-` ranged below the rollers and adapted to seat the sheets on edge in the box and pack them,`

along the same in standing position therein one behind another, mechanism for driving the rolly ers and operating said means, said mechanism i being operated by a driven element of the ma'- chine when the `stacker unit is moved into ophandling machines, a movablesupport,v a packer box thereon, a pair of spaced brackets mounted l on the movable support adjacent an "open end of the packer box, feed rollers and av rotatable device journalled in superposed relation on said brackets, said rollers being vadapted to` :feed sheets downwardly toward said end of the packer box and saidrotatable device being adapted to seat the sheets downwardly on edge in the packer box and pack and advance them in standing position therein one behind another, and gearing for driving said rollers and said device and driven by a part of said machine when said unit is moved into operative relation therewith. i

y y ANDREW OLSON.`

WALTER HOLMS. 

